MODELING DATA IN THE ORGANIZATION QUIZ

Multiple and binary relationships are the same thing.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?

A binary relationship is a relationship between two or more entities.

False

True

TRUE ANSWER : ?
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A binary relationship is which of the following?

An attribute with two different relationships

A relationship between two attributes

An entity with two different relationships

A relationship between two entities

TRUE ANSWER : ?
YOUR ANSWER : ?

An oval represents which of the following in an ERD?

Optional One

Relationship

Attribute

Entity

TRUE ANSWER : ?
YOUR ANSWER : ?

A relationship is which of the following?

Weak entity

Property or characteristic of an entity

A person, place, or thing

Link between entities

TRUE ANSWER : ?
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A time stamp is a time value that is associated with a data value.

True

False

TRUE ANSWER : ?
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A logical representation of the data for an organization or for a business area is known as an entity-relationship model.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?

A rectangle represents which of the following in an ERD?

Attribute

Entity

Optional One

Relationship

TRUE ANSWER : ?
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If there are two entities with a relationship between them, and one of the entities is completely dependent on the other, then which of the following must exist?

Optional one cardinality

Weak entity

Multi-valued attribute

Derived attribute

TRUE ANSWER : ?
YOUR ANSWER : ?

Some business rules cannot be represented in common data modeling notation.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?

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